Alternating-current vapor electrical device



March 11, 1930. w, ANDEEQSQN, JR 1,749,993

ALTERNATING CURRENT VAPOR ELECTRICAL DEVICE Filed Fb. 23, 1926 2Sheets-Sheet 1 w, 1:. INVENTOR (3):

ATTORNEY March 11, 1930.

Filed Feb. 25, 1926 2 Sheets-Sheet 2 INVENTOR ATTORNEY plished by thenovel construction and com- Patented Mar. 11, 1930 r UNITED STATESPATENT OFFICE WILLIAM T. ANDERSON, an, or NEWARK, NEW JERSEY, ASSIGNORTo HANOVIA CHEMICAL AND MANUFACTURING COMP IPORATION OF NEW JERSEY.ALTERNATING-CURRENT vAroR ELECTRICAL. DEVICE Application filed February23,1926; see-am. 39,924.

tion'in therapy, biology, chemistry andphys- Lamps of this nature have,so far as known, hitherto employed laminated iron core reactances, withthe result of producing, occasionally, buzzing or hissing noises when inoperation, highly objectionable in any event, and particularly so, whenused therapeutically, to the nerves of apatient undergoing treatment andfrequently in an excitable condition due to the strain. imposed.

It is therefore an object of the instant in-- vention to provide a solidreactance core come erally indicated by the numeral 20, extendingupwardfromtheplate 16. I

posed of iron, or composition in which iron predominates, whichabsolutely precludes noises due to vibration.

It is a further feature to produce a solid core for reactance coils thatcan be manufactured at a fractional part of the cost of a laminated coreand which simplifies the assemblage of the electrical devices, and fur-.usual manner and towhich curr'entis suppliedby a flexiblecable 26, thelamp con- "taininga tri-polar burner, generally desigthermore eliminatesthe danger of short circuits caused by loosened laminations cutting thewire insulation.

These and other like objects are accombination of parts hereinafterdescribed and shown in the accompanying drawings, forming part hereof,and in which Figure 1 is a side elevational View of a quartz mercuryvapor lamp made in accord-j ance with the invention.

Figure 2 is a transverse sectional view of I the lamp base, drawn to anenlarged scale,

the section being taken on line 22 of Fig. 3. Figure 3 is a sideelevational view of the electrical elements used in the base, the baseFigure 4 is a diagrammatic view of the electrical elements and theirconnections.

Figure 5 is a perspective View of the reactance core indetail.

Referring more in detail to the drawings, a base, generally designatedby the numeral 10, isprovided withradial extensions 11 inv which arefitted castors 12 to facilitate rolling the apparatus from place toplace."

Removably secured in a central hub of the base is tubular column 13,surrounded at its lower portion by a cylindrical casing 141 havngperforations 15 in its side wall in order to provide circulation of airto the electrica elements disposed within the casing. The wall of thecasing rests at its lower edge on a plate 16 supported by the base 10and is anchored by lugsl'? to the radial elements of the base.

cover plate 18 extends over the upper edge of the casing and mounted nothe plate is a switch 8 to control alternating current conducted by aflexible cable A. C. from any convenient source of electricalenergy by aconductor 19, to an auto-transformer, gen- Adjustably mounted on thecolumn 13 is a sleeve 21 slidable and rotatable manually,

the sleeve having an offset bearing in which is mounted a slidablerack'22 having at one end a pivot 23, adjustably supporting a shade 24which carries a lamp 25 adjustable in the third conductor 29 leadingfrom the negative poleof the burner to a secondary resistance,

generally indicated at 30,from which a conductor 31 leads to the coilsof the auto-transformer20.

One of the coils of the transformer 20 is connected by a conductor 32 toone coil of a primary reactance33 containing an adjustable core 34:, anda contact 35, movable with the core, maybe suspended over another coil36, connected by a conductor 37 to the switch S to which the lineconductors are attached. The auto-transformer20 is secured to the plate16, as is the coil 36, and the primary reactance 33 is attached to thecover plate 18 ANY, QFNEWARK, NEW JERSEY, A COR- as best seen in Figures2 and 3, which shows the relation of parts within the casing 14.

The secondary reactance 30 is also fixed on the casing plate 16 and itsconstruction con- 5 stitutes much of the novelty of the invention,comprising, as it does the application and use of a solid core reactancespecifically in connection with alternating current vapor electricaldevices of the type described. In these devices, under like conditions,

solid core reactances can be constructed that ssess substantially thesame electrical beavior as do laminated core reactances.

The solid core reactance consists of insulated wire coils mounted on acore of'solid metal, the principal chemical element of which is pureiron, cast or drawn as preferred.

Small quantities of other elements are permissible but considerablequantities of forei adulterant elements are undesirable.

he core consists of a base 40, see Figure 5, having a central upstandingbar 41 separated by spaces 42 from similar but narrower 5 bars 43. i

- The central bar 41 is Wound with suitable insulated wire to produce acoil 44 extending from the base towards the upper end of the bar andfilling the remainder of the c 30 spaces 42 are dielectric plugs 45 torender the top of the reactance substantially smooth and level.

From the foregoing it will be apparent that not only can'a solid core beproduced as far more economically than one consisting of laminae, butthat other inherent and important advantages are attained.

From the foregoing it will be seen that a simple device for this purposehas been dis- 0 closed in the preferred form of its embodiment, but itis not desired to restrict the details to the exact construction shown,it being obvious that changes, not involving the exercise of invention,may be made without.

45 conflicting with the scope of the appended claim.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is 4 5 In combination with a mercury vaporlamp emitting ultra violet radiations for therapeutic use, analternating current device for operating said lam a secondary reactanceincluded in said evice, said reactance having a solid iron coreconsisting of a base provided with three spaced integral upstandingbars, a coil of insulating wire wound about the central bar, anddielectric plugs over said coil within the spaces be- 00 tween the ustanding elements,

This specification signed this eighteenth dayof February, 1926.

WILLIAM T. ANDERSON, JR.

